♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/common-ancestor-path/README.md

@@ -1,28 +0,0 @@
-# common-ancestor-path
-
-Find the common ancestor of 2 or more paths on Windows or Unix
-
-## USAGE
-
-Give it two or more path strings, and it'll do the thing.
-
-```js
-const ancestor = require('common-ancestor-path')
-
-// output /a/b
-console.log(ancestor('/a/b/c/d', '/a/b/x/y/z', '/a/b/c/i/j/k'))
-
-// normalizes separators, but NOT cases, since it matters sometimes
-console.log(ancestor('C:\\a\\b\\c', 'C:\\a\\b\\x'))
-
-// no common ancestor on different windows drive letters
-// so, this returns null
-console.log(ancestor('c:\\a\\b\\c', 'd:\\d\\e\\f'))
-```
-
-## API
-
-`commonAncestorPath(...paths)`
-
-Returns the nearest (deepest) common ancestor path, or `null` if on
-different roots on Windows.